Softwares and tools from solar inverter manufacturers
Many photovoltaic inverters manufacturers provide their one software in order to size and design a PV system. Usually they propose solar panel database and worldwide solar and temperature database.
All these softwares are free but obviously the inverter database of each is limited to that of the manufacturer. Moreover the quality and accuracy of the calculation is not guaranty and the features of the softwares are limited.
New PVSize 2 software tool is free and easy-to-use system dimensioning and performance prediction tool for photovoltaic (PV) systems using ABB solar inverters (ex POWER-ONE, Aurora inverters). The tool is intended for customers and system designers for finding proper solar array and inverter combination.
omnik-solar is a inverter manufacturer from china (joint venture sino-german) . Its basic design online software SOLAR DESIGN SOFTWARE contains a large database
INGECON SUN PLANNER is the online software developped by INGETEAM to size a PV system with Ingeteam inverters.
Software for PV Plants dimensioning.
Syscalc is the software developped by Mastervolt to size a PV system with Mastervolt inverters. Fast and effective PV system design, can be run locally on any PC with Microsoft Excel installed. No internet connection needed.
The company Samil Power have probably closed down.
More info here...
Samilpower gave the possibility to design a PV systems with Samil Power inverters.
The softare included worldwide radiation databases.